Dubrovnik Weather in September

In Dubrovnik, September brings high daytime temperatures around 24°C (75°F), with nights cooling to 18°C (64°F). Expect quite a bit of rainfall this month.

Rainfall in Dubrovnik in September

Analyzing past climate data, one can expect approximately 9 days of rain, averaging 139 mm (5.5 in). The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Dubrovnik in September

Expect highs of 24°C (75°F) in Dubrovnik in September, with nights dropping to around 18°C (64°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Dubrovnik in September

Expect a lot of sunshine this month, with about 310 hours of sun. These sunny conditions add to the overall experience.

Average water temperature in September

At 24°C (75°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

Should you favor a climate that's both dry and comfortably warm, May, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit Croatia, check out our Dubrovnik's climate page.

Dubrovnik Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 24°C (75°F)  

Water Temperature 24°C (75°F)  

Chance of Rain 28%  

Precipitation 139 mm (5.5 in)  

Rainy days 9 days  

Humidity 59%  

Sunshine 310 hours  

Percentage Sunshine 70%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Dubrovnik typically drop from around 27°C (81°F) at the start of September to approximately 24°C (75°F) by the end. Nights are pleasant, with lows typically ranging from 15°C (59°F) to 19°C (66°F).

Average temperatures in September

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

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Historical weather for Dubrovnik in September

Browse day-by-day weather records for Dubrovnik spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Dubrovnik historical weather extremes in September

Based on 49 years of weather observations in Dubrovnik between 1976 and 2025, these are the recorded extremes.

• The warmest day in September was on September 18, 2015, with a maximum of 34°C (93°F).
• The lowest daytime temperature in September was 16°C (61°F), recorded on September 22, 2008.
• Nighttime temperatures dropped to 6°C (43°F) on September 30, 1995, marking the coldest September night on record.

What to Wear in Dubrovnik in September

For Dubrovnik in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With water temperatures around 24°C (75°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Dubrovnik in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Croatia, check out our Dubrovnik's climate page.

More climate data for Dubrovnik

Temperature Rainfall Sunshine Humidity Water Temp

See the full Dubrovnik climate overview or explore weather in Croatia.